Speed-changing and stopping device for knitting-machines.



H. SWINGLEHURSI'.

SPEED CHANGING AND STOPPING DEVICE FOR- KNITTINGI MAGHINES.

APPLICATION FILED JULY 13,1912.

1,116,161. Patented Nov.8,1914.

w INVENTOR HARRY wrrNEssEs l ewlNL HuRs BY HPS fa/LL ATToRNi-:w

g o2 g3# te n APPLICATION FILED JULY 13.1912.

Patented NOV. 3, 1914 z V uuviinrroFz VM4444 HARRY SWINGLEHURST [3'- ABY HlsgATToRNEY H. SWINGLEHURST.

SPEED CHANGING AND STOPPING DEVICE FOR KNITTING MACHINES.

APPLICATION FILED JULY 113, 1912.

Patented Nov. 3, 1914,

3 SHEBTS--SHBET 3.

WITN E SBE 5 @r-Dm@ m f INVENTOR HARRY SWINGLEHURST BY HIS ATTORNEY 'theiframe 1.

no e

'A'EIS OFFCE.

EMRK SWINul-LEHURnT, OF PHILADELPHIA, PENNSYLVANIA, ASSLGNOR TO SCOTT &W'LLIAMS, INCORPORATED, OF CAMDEN, NEW JERSEY, A CORPORATION OF NEWJERSEY.

initier-lei.

Specification. of Letters Patent.

Patenten n uv. 3, 1914.

Application and July 1s, 1912. serial No. 709,280.

ile, it known that l, HARRY Swmemsrimts'r, a. citizen of the UnitedStates, residing in thiladelpllia, lemiavlvania, have invented certainlmproveimnts iu S eed- ("hangglngr and Stopping Devices for(nittingiliacl'lines, of which the following is a specification.

The object of my invention is to provide cflicicnt mechanism forstopping the operation of a knitting machine, and for automaticallychanging the speed of movement ot the machine atr a predetermined timeor times. This object I attain in the nntnn'er hereinafter set forth,reference being had to the accompanying drawings, in whleh Figure 1 is aview, partly in side elevation and partly in section, of speed rhangingmechanism for knitting machines conslruct ed in accordance with myinvention; Fig. 2 is an end View looking in the direction of the arrowFig. 1; Fig. 3 is a transverse section on the line a-o, Fig. 1, lookingin the direction ofthe arrow y. and Flc. 4 is a transverse section onthe line omc, fig. l, looking in the direction oi? the arrow w.

In the drawing, 1. represents the supportingr framework of the machine,and L the driving sha l't which is mounted in suitable bearings `in saidframework 1 and in a bracket B projecting therefrom. Mounted upon andtree to turn on thc"shatt 2 is a. sleeve Ll, and mounted upon and freeto turn on the latter sleeve is another sleeve 5. 'lo the stoere #t is-eecured a pulley (i and to the sleeve 5 secured a similar pulley T, athird pulley ti being Secured directly to the shaft 2, as shown inFig'. 1. Secured to o r ferne ing part ot the sleeve 4 is a spur piniont), which meshes with a spur wheel 1() which is' free to turn on a studil projecting from Securcdto the inner side of the spur Wheel 10 is. apinion 12, which meshes with a spur wheel 13, the latter beine: securedto a pulley 14 which is secured to the shaft Q. lVhen the driving beltis u lon the pulley 8 power will be imparted directly to the shaft 2 andthe latter will be rotated at full speed. lf, however, the belt shiftedonto the adjacent pulley tl power will then bh transmitted to the shaft2 through the medium of the shaft `rl, spur pinion i), spin' wheel 1U,spur pinion 12, spur 4 wheel 13, and pulley 14, and said spur gears andpinlons are, so proportioned as to reduce the speed at which the shaft 2willthen be rotated. The pulley 7 is a loose pulley and when thedrivingr belt is shifted onto the same the transmission of power to theshaft 2 will cease and the movement of the machine will be arrested.

The above mechanism will be recognized as an intance of a well knownform of power re ense and speed-changing gearing, as shown, forinstance, in the patent to George D. Mayo, No. 726,178, dated April e1,1903.

The beltshipper 15 is carried by a rod 1G suitably guided in a bearing17 on the main trame, and said shipper has an arm 18 (Fig. 3) carrying arod 19 which is guided in a bearing 20 on the bracket 3 so asto steadythe shi `per in its movements. The 4inner end of he shipper rod 16carries a stud 21 which is adapted to the forked upper end of a shipperlever Q2, the latter beiner pivotally mounted to provide a movable'liulcrum at its lower end upon a slide .23 which can move to and froupon a stud 24 projecting from the frame 1, the sleeve being preventedfrom turning,r on said stud by means of pins 25 projecting from saidstud and entering,y slots 2t! formed in the opposite sides ot' thesleeve, as shown in Fig. 4.

lhe shipper lever 22 has cheek pieces 27 disposed on opposite sides ofan anti-frietiou roher Q8 carried by the lower arm of a trip leverltl'which is pivotally mounted upon a stud 30 carried by n projectingbracket 31 on the frame 1, the upper arm of said lever E25) beingrpivotally connected to the outer end of a link 32 whose inner end has uInfojet-ting pin 33 which, when the trip lever 2S) is in the positionshown 'in Fig. 1 contacts with the hub 34 of a sector-shaped arm :l5scoured to n short transverse shaft thi. which is adapted to n bem-ino'projecting from the trame l, this shaft a so carrying the usual lever3T, whereby the sto )page of the machine 'by hand is effected. The uppert'acc ot' the arm 35 is cam-shaped. as shown at 18, and engages with thebent. lower end lff of an nprirrht shaft -10 which is mounted in asuitable hearing in the. top of the supporting freine 'l enel ie aoteelupon liy the usual fabric or weetecleteotor 'actuated needle-protectoror knock-olif device oit a knitting machine, socle, tor instance, asthat shown 1n the potentie li. WV. Scott and l-l. Swingleliuret No.,@799ML clatefl July 30,

A sfiring el, ooileci around tlie stud 30 and having an arm lleotingmupon a boss t2 projeoting 'from the lower end ot the lever 29,tends to move said lever in the direction of the arrow, Fig. l, but thisniovernent is nor- Inally resisted by reason oit the .tact that the link32 is normally lielci in the position shown in Fig. l becanee oit' itssupport by a lug @r3 on the ieee o tlie arm 35. when., liowever, saiolerin is elepresaerlu either logT the action of the linool'oo ill oaf bytlie manipulation of the lever 3l' tlieef'upport of the lug 43 isremovedn from the linlr 32 ancl the latter is permitted to drop so as tocarry its pin 33 below the .liii'o Se of tlie anni 35, and the lever 29is tlien tree to beinovetl by its spring il so ae to turn upon ie pivotstoel 30 and, y engageru t ol the venti-fiiotion roller 28 with the,oeeltjpieoes 2'? o! the shi per lever Quiiiove letter eo ae to shirttlie drivin@` beit from 'the pulley 35 or the pulley 6, wicli it niej]et the time loe occupying, onto the looee pulley 7 The means for one?the erm 35, end thus permitting v of ,tile loelt through the ineclinrn ot ie trip lever 299 ll term emergency t' they not employed flnri e joperation of tlie inacliine. W i, iron/"everj the eliiztt-v ing of thebelt from one pulley to another has to be etiected tintin one orderlyoperan tion of the ineeliine tlie trip lever 29 remains locked inposition on Sturt 30, anni the anti-friction roller constitutes thetuleruni upon which tlie lever 22 swings.4 lt/ovenient ot this characteris: inno parted to the shipper lever' loy ineens of a 'cam drum l5wliiclo acte upon sleeve through the mediuinot e, lever andi connectingrod 47, sei lever i6 being ipivotally mounted at one ontlopen aprogecting lug.

48 on the iframe 1,' and being pivotally colti nectecl at its oppositeend to tlie rod 4&75 said lever carrying, at an interrncfliate point a.

projecting pin 49 which engages with the cam slot in the vairain 'l-i,es eiiown in Fig. l. g'lhe configuration of tliis earn slot will ole endupon the shifting movements of the eljt required at any particular timein the operation or the machine. li, "for instance, tliejsipeed ofmovement of the machine is to be reluoed at a certain point in the cycleof operations` peri-'orin' by the machine, say whenr themachineischanging irom rotary 'to to-anfl-tro or reciprocating knitting, the

configuration oi' the cani elot will loe suoli as to impart a partialmovement to the shipper lever 2Q at such time so es to shift the belt 68of the rato Step by Step movement oit rotation is iin- A parteol to thedrain 't5 so .as to complete one revolution ot the saine during timepertorinence of a complete cycle ot' `operations by the machine, theineens for eecting such operation being follows: Secured to tlie olruni/l is a ratcnet-wiieei 5G, which is normally opereterl by nawl 5lpivotally mounted upon one erin oli a orenlr lever 52 whose other erinengages; a pin 53 on e lever 5i, vibrating movements being imparted totlie latter by means of a @ein on the rotating com cylinder of themachine, or in any other suitable way. The ratchet wheel 50 turns on astud. 55 oi large diameter secured to the :treme Il9 anrl through thisstud pass two shafts 5G enel 5'?, the shaft 5@ carrying, at its innerend, a pinetucllled measuring wheel 58 Fig.. l.) which enga ee with theweb of fa rie produced by t e machine and is tui-neil loy reason oit.suoli engagement with tlie web es tlie latter clescene on its way fromthe cylinder of the machine to tlie taire-u mechanism below the WheelElie shalt 56 is geared by means of e wir-eel 59 an@ spur pinion 60 tothe elia-itt 5?9 wliicli carries a pattern cliain drum Si, tlfiepat-tern chain 62 lim/ing a luy 63, which, on eael'i movement ot thecliein, strikes an arm 6l oi a lever which is mounted eo to swing on astud 65, and has another arm '6G carrying a plate 67 (Fig. l) whichnormally engages with the point of the pawl 5l. anallio e tlie same inposition, where it ie ireetrom engagement with a low tooth 68 oi" theratchet wheel v50 anni conesquently will not impart :my movement to thelatter. l/lflienev however, tlio lug 63 strilcee tit-e lever erin te itwill reise tlee eamo and 'therefore depress the arm 66 so as tol permittire pewl to drop into engagement with the tooth 68 and start'tliemovement ofthe ratchet wheel, suoli movement beine* then continuefl byengagement of the avi/5lA with the normal or nigh teeth ot tlie w. eel,

the erin 66, when in its normal position, tailin to )revent the eureement of? tlie owl J i l) held out of enegement with the low tootl'iV etwheel and therebv again arresttlie movement oi' time same. yo'tatioi'iozttlieratoliet wheel 50 ie therefore etlectecl only et periodicintervals rleterniineol lov the titi malerei ieng'rlll ol'' illeplliiern. cllziin 62. Whl'lre severlll sl'liliis from one speed toanother nelly lleve io be mede during ille complete cycle olf operationoi the lnllclline ille ratchet wlleel 50 may conveniently be providedwil/ll `iwo or more low il Jill G8 distributed :lrenlld ille peripheryof ille Same.

The lever 37, whereby ille erm is oper lied lly llzlnd in order ioeilfeelb ille ellil'i-illlr,r oi' lille belt from ll falsi pulley enioille loose pulley in order ile slop ille lllllellille, carriel il pill7() wlliell is intended io lle cfllllllleted 'lo ille izllleulp lever olille nlzlclline, so that in -ille event of :lily sudden drop of thellltiter, Snell, for insillnee, als n'liglli be caused 'ny the web'runl'ling oil" ille needles el ille nlzlel'line, the levez' 37 will llclctlili'lled so :le 'lo ll'lllzoulziiiclllly slop ille lnovenlenl; oflille ll'leclline.

nlllke ne clilil'll to ille nleclll'lllis-tnl lvllele ley ille cllllndlilnl fll opeelied in llcel'lrdmice with ille orderly operlliioll oli'ille lllllelline, als illis lllls; long.;- ieeell eoll'lllloll exeepl;as lllil elelllent oli llly new colllllinliiioll, lllld l do not limitilly prrflelli clllilll to llleelllll ol' illia` ellllrlleier, :lellllllly elplivillelli lees eoilld lle need l'er ille pllr'ljllrle, llero l lilnil; lllv llrlllullr elzlinlll i-o ille pllriiilr lrelllerpfellcy devices lvllerelly illev Lrip lever il.) isz llelzueiell,ne lllelle nllly :ilse lle llllldilied il'illllollll llepl'lriiuejl'rolll ille elisenlzilll. le: illlree of illy iillvelll'lilln.

ll'le ierlll l Shipper lever l le; elllljlleyed ill Sonie of ll'lyelllill'lll does-l nel; neecllsllrily lneell e` lever 'for opel-:llingll llcll shipper, llillce il` ill obvious lllllln lille releasingl delice could lle elle oi ille iypl; elllplilyire :l lllllell null illll 221peed ill-:lin would lle operetell l'ly oillcr l'lelillsl lllzln pulleysllild ll slli'lfiing llelill l. lll ll` ,f-lpeed changingersieppillirlllecllllnir nl iior li'nili'inlj; inllellinesu llccoillllilllliioll eli :l lleli shipper, ll l-lllipper level' i'e':lclllllling; ille saline` llllvillg: ilve fulrrullef, :l lrip leveri'llovidillgg' one o'lE seid 'lilllel'll1'lfls-, einer geney devices forrelelxf-:illglj Suid lllip lever, clllll nleellllllzllll lllllrillgfil.:lcci rilllllee \viill ille orderly eperlllillll ol' ille llllu-lline.and lnllliel'lllnielln lellerelrl' wid cuni lllel'llllnislll isconrleelfed if 4ille oilllejl' l'l'llerillll ol ille :ellipper lever.

ln Speed ellzlllgving er Sillppinzfr roel-llu- -nl `nl 'l'orlrllilziil'lgl nlllellilles, ille l'zelllll'llllllioil ol :i fallipperleverl :i irip lever on wlliell seid Sllipper lever lilllcrlllned,rlluarlgelley slop nleellzlnisnl for eol'llrollingr` ille Alllsil'llll'loil' Sllid irip levery l:inl l'llecllllnilliln moving in accordancewilli ille orderly operlliien ol` ille meelline, :nldnleellunisrll.'lvllerellv lille Sllipper lever llllder eenirol ol" ellidelllll niecllilnisln, wllerclly ille :slli'llille: ol' ille llell muylle ell'ecied ellllel` by silid'clllll lllecllll i'liflnl or by illeoperlliion el' ille irip lever. 3. lll speed cl'lzu'lggingg orelllpp'lni;` llleellll;

'nisnl lor ll'liiiillp; lnllellil'leli, ille eoll'lllinllliolil oil ilshipper lever llllvillg cheek pieces illlereon, l1 trip lever llllving elllemller projecting lleilween Seid cl'leeli pieces :ind constituting ellllcrunl for ille Shipper lever, cem meehlv mism llloving; inaccordance "with illieorderly operation of ille lnllel'lille, and ineenswherelly Seid elim mechanism is caused to operate ille Shipper leverupon. ille before-mentioned llleruln.

il. lll speed changing; or siepping xneelmV llielll lor lclliiiingnlllellines, the combination of the shipper lever, :l irip lever onwhich ille seine ls fulcrlulled, :l slide having piv otlll conneetil'lnwith seid shipper lever, cern nleellilniein llloving in zlccordllneewith ille orderly opel-ation of ille nlllclline, and ll'lellnli wherebyslllid clllnl ll'lecllilnislm is elllllsed lo ope alle l'lllid Slide,whereby the ellipper lever muy lle ellused lly the nlovelllenl; of illeslide io swing upon its fulerlnn llll ille lrip lever, or lle lense/d bytlle movelllelliy el ille irip lever io Swing upon iis fulcruel on ilieSlide.

5. ln ll power lelcllfle end ecn'lrol nlecllzl- 'llilllll illlrll'lliliing lllzlellines7 clllergeney zlciu- :lied devices, pllllerllcontrolled devices. ll prever-rel a :se :ind flpeed ellllnging driveeenling, shipper nlezllll: l'or ronirl'llling; ille lill-lese end speedrllllnee, :nld :l lever conlleeied :ily elle end lo :luid shipperineens, ai lille oiller io one ol' seid devices, :ind in ille llliddleio ille olller of Filid devices, lvllerelly ille ,ellipper lllezlnl:llllly lle independently :leiullied lily eiiller olf Suid devices.

l. lll :l lilliillingg' lllllcllille, n. `vl'lriilllle Speednleifilllllislll, lill emergency sliep motion lllel-llllllielllrlllllprlldllg; :l pulver release devire5 :l sllipper lever lor movingille rele-lise device, fllpllllle in elle position of shifting illedrive irelll one Speed io lllloi'ller Speed,

ellid sllipper lever llllvlng; ll nlovl'lble fillclinn, il, :epi-ille;l'lciullied lever providing iliolle elld :l 'l'rr-e ll flaring: lolllllid Sllipper le ver, :ind nlellnl-l lol' l'elneing ille springl'lcinllied lever, in colllllinlll'ion will! pllllern eollll'olledIneens: l'or llloving 'l'lle l'ulcrunl le illllependenlly rollilrol illeposil'ion of ille nell llllipper io vill-y ille speed.

7, lll ll ll'llilli'lllg nlllclline, eulergeziey eeiilllied slop lnolionnleellzlnisl'n conlprisine: :l power release device, o sllipper leverl'or lllovillp; ille release deviceAJ llliving ll lllevllllle'l'ulel-ulll, :l spring llciullted lever prii'vii'lille; lli olleelld'll' 'l'ree belli-ing for seid Aellipper lever, l'llld 1n uns forrel elsing ille spring :lcll'lillied levee; in conlllillliiion withplliierllVeenirolled ineens [for nloving ille l'lllerl'llll loindepenljlenily eollirol ille position olf ille lelclllle device.

il, .Tn n, stop motion deviee 'for knitting mzlcllillcs, illecolnllinlltion olf ll shipper leve'r` f llllline; two llllcrllllls.' llill-ip lever ellrrying one ol sllid :lulcrlulls :ll'ld llllving :llocking 'linie` lnellnl-l lending fo lllove ille trip lever to lopellllethe shipper lever,ll roek :shaft carry

